Freedrum uses gyroscopes/accelerometers (IMU for short). We have tested it (using Intel's Curie chip and the assistance of some of Intel's engineers) and concluded that drum sticks undergo too much acceleration for it to allow fast and accurate drumming. The fact that IMUs can report orientation, but not reliable position, is an issue in drumming, for example to distinguish between a snare and a high tom. So we believe Freedrum will only be able to allow limited drumming expressiveness.

It's great to see more people advocating air drumming though.

We are aiming to release a beta of the VR / 3D mode for Aerodrums late January. It's going to be good:)